Head receiver set



Aug. 31 1926.

E. A. EOHLMAN HEAD RECEIVER SET Filed March 9, 1922 Patented Aug., 31, i926.

1%. @j "ill Vi g g 1,598,042 rareur orrics.

ERNEST A. IBOHLMAN, 0F CHCAGO, LLINOS, ASSGNOR T0 KELLOGG SVJITCHBOARD AND SUPPLY COMPANY, 0F CHCAG, ILLNOIS, A CORPORATION OF ILLINOIS.`

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Applicationled Iiareh 9, 1922. Serial No. 542,220.

My invention relates to head receiver sets in general, and has to do more particu` larly with an improved receiver head set for use in telephone or wireless receiving, when it is desired to have two ear pieces properly iitted and held against the ears in the best positions Yfor hearing and at the same time comfortably.

Prior to my invention various means of adjustment have been employed to adjust the ear pieces on the head band to accom- 'modate heads or' various sizes and shapes. Set screws and other devices have been used which required the removal of the set from the wearers head to permit the proper adjustment desired. To overcome these objectionable features and to provide a simple means for adjusting the ear pieces l have provided an improved spring clamping member which is integrally formed with the ear piece supporting member, which, by means of frictional resistance, holds the receiver or ear pieces or the set in any position and enables adjustments to be readily made without removing the receiver set from the head of the wearer.

Another feature of my invention is the manner in which l secure the head bands to the posts supporting the ladjustable spring clamping members, which members support the receivers7 whereby the head bands Vare properly spaced relative to each other so that they will rest snugly upon the head of the wearer.

For a more complete understanding or my invention, reference may be had to the accompanying drawing, in which like reference characters in the several views denote like parts, and in which- Fig. 1 is an elevation of a complete head set embodying my invention;l

Fig. 2 shows a receiver and a clamping device and also the head bands secured to a common member in plan view; f

Fig. 3 is a sectional view along theline 3 3 of Fig. l showing` the two ends of a .pair ol head bands engaging the receiver supporting member or post; l

Fig. 4 is a sectional view along the line 4-4 of Fig. 1; and

Fig. 5 is a sectional view 55 of Fig. 2.

Referring now more in detail to my invention as illustrated, I show a pair of head bands 1, each being suitably formed along the line vsupporting members are the same,

so as to tit snugly over t-he top of the head or the wearer. The arch of each head band 1 is encased between the strips of fiat webbing 2 or some other suitable material t0 permitthe head bands to rest upon the wearers head in a comfortable manner. To each pair of ends 3 oi' the head bands l, l secure a supporting member or post 4, and since both supportingmembers 4 and the manner in which they are secured toa pair 'of free ends 3 are alike, a description of one will suiiice. The end 3 of the vhead band 1 has a portion 5 turned over slightly and a` fiat oblong 4depression 6, the purpose oi which will presently be described. The supporting member 4is cylindrical in construction and Ahas its one end 7 flattened, but not enough to closethe opening 8. The pair ot ends 3 or" the wires of the head bands are now placed into the opening Fl of the end 7, the said ends 3 being kept separated and in engagement with the wall 9 o1 the opening 8. The end 7 of the member 4 is now punched at 10, 11 and 12 to press the wall 9 of the opening 8 at 10 between the ends 5 of the wires 1, at 11 to press the wall 9 into engagement with the depressions G, and at 12 to press the wall 9 together between the portions 3 or' the head bands 1. The wall 9 engaging the depres- -sions 6, securely holds the' head bands in place against being moved in or out of the member 4. The wall 9 being pressed downward until it engages the opposite sideof the wall at right anglesas shown in Fig. 4,

forms shoulders for the ends 3 and separates them so that the head bands are properly spaced relative to each other and Vmaintained in such position in the manner just described.

Referring now to the supporting member for adjustably holding the receivers R in their adjusted positions, and `since both description of one will suiiice. I provide a supporting member 14, having its ends 15 turnedback parallel to eachy other and each provided with an oriiice through which the pins 17 extend. The pins 17 are suitably secured to the receiver casing RC to pivotally support the receiver R in position. rlothe back of the supporting member 14, and integrally therewith, I provide a U- shaped spring clamping' membery 18. The legs 19 of the U-shaped clamping member theirVV normal Atension until they are .the screw 21,

18 diverge slightly so as to give them a tension when their tree ends are torced toy,ward each rother 'for purposes as will presently be described." Each leg 19 .is provided with an oritioe 2O to'permit the insertion oi' the cylindrical supporting ineinber 4.

To insert the cylindrical supporting member 4 into the orifices 2O oi" the legs 19 of Atheineinber 18, the .free ends of the said legs 19 are iorced toward eachy other against j substantiail f, parallel with each other. The movement places the legs 19 oi the member 18 at rightangles ywith the member 4 and as the orifices yare slightly larger than the diameter ot themember 4, the same may be inserted into and the member-18 is free to move up and down on the member 4. When the tensionv is released from the ree ends of the legs 19 of the U-sliaped inembcr 18, they assume their normal position as illustrated in 1, thusplacing their legs 19 in angular relation toy themember V.4such as tocause the legs 19 to grip the `member 4 to prevent anylateral movement ci the receiver supporting member 14 relative toy the member 4, thus clamping the member k14 in place. 4The member 14 cannot now be movel up Vor down due to the .ricticnal resistance existingbetween the .legs 19 and the 1member 4.

To prevent the reinovaloi the U-shaped clamping member- 18 from the member 4, I provide a screw which has screw-threaded vengagement with the end 22 of the ,member 4.' '.l`he head oithe screw 21 is slightly larger in diameter than the diameter of the orifices inthe legs 19 of the member 18 so that the member 18 cannot be removed vfrom the member 4 withcut first removing lvlrom the above description, it may readily be seen that in order to adjustY the receivers .l-.up or down, as the case may be,

Y to lit-,properly to the ears oi' the wearer, all

-supportiifig ,member ion. `Whenthev receivers l R- have been that .is necessary is to press inwardly with the fingers the legs 19 of a U-shapedclampthe walls of the or` ing member 18 until iiccs 2O 'tree the cylindrical member 4, where-v upon the receiver supporting member` 14 iiiay be moved upordawn untilthereceiver `is properly ittedngainst the ear o'i' the .ivearei frhen thisadjustmentis obtained, pressure is released tromthe reeends of the legs '19,

Y permitting the legs tomove fapart, causing the walls .oi the, oriiices 2() the member 4 to hold receiver tc againgrip Y 14 in its adjusted posipiaced in their adjustedpositions'after the ,manner described, the Llp-,shaped clamping `member 18l iii-ayA be rotated on the Vmember 4to permit the receiver to `fit snugly against the ears 'ot the wearer. v

geese/i2 same relative to the posts which are attached to the head bands. further pro-v vide only one member or post, for each receiver, to holdthe two bands of the set in position. By inserting the ends of the wires in the posts in the desired manner and by then depressingthe wall of the postin three places, l am able to firmly secure the posts to the head bands.. By forcing the wall of the post at12, as shown in Fig. 4, againstI the opposite 'side or wall of' the post, the wall of the post at 25 extends down at right anglesto a center line drawn across and just below the centers oi the wires ot the bands, thus making it impossible to torce this ydepressed portion of the tube or post 4 outwardly it attempt is made to torce the wires together.

v"While 1 have illustratedr and described a vpreferred embodiment of my invention, it

pair of ends or" said head bands, a receiver supporting member having a spring clamp.

ing member integrally formed therewith,

said clamping member being provided with oriiices through which said cylindrical meinber extends, said spring clamping member andv said cylindrical member cooperating to permit adjustment of said receiver sup- `porting member and .to maintain the same ink its adjusted position.

2. A device of the character described including a pair ofviiead bands, ,a cylindrical member secured permanently toa pair of ends oi' said head bands by having its inner wall pressed into engagement with the said pair of ends of said head bands, a receiver and supporting means or the saine,

`a U-shaped spring clamping member integrally formed with .said supporting means, and having oriiices provided in the legs of said U-.shaped spring clamping memberV through which said cylindrical member extends, ysaid U-shaped clamping member Yand ksaid cylindrical member cooperating to permit the adjustment of said receiver to various positions andV to maintain said receiver in its adjusted position, 3. A device of the character described llO comprising Lessinia a pair of head bands provided with two pairs or ends secured permanently to a pair of tubular posts by having the walls of their inner ends pressed into engagement with the respective pairs of ends or" said head bands, said pair of posts adapted to maintain said pair of head bands l separated from each other and in position relative to each other, a supporting member, a receiver pivotally supported by said sup porting member, a U-shaped spring clamping member integrally formed with said supporting member and provided with a pair of orifices for receiving one of said pair of posts whereby said U-shaped clamping meinber cooperates with said one post to permit the adjustment of said supporting member and to maintain the same in its adjusted position, and a member for engaging the end of said one post to prevent the disassociation of said clamping member and said post.

4. In a device of the character described comprising` a head band provided with a pair of hooked ends, a tubular rod secured permanently to said head band by having its inner wall pressed into engagement with the said pair of hooked end of said head band, a supporting member, a receiver pivotally supported by said supporting member, a U-shaped spring clamping member integrally formed on the back of said supporting member, the legs of said U-shaped clamping member being provided with orices through which said rod extends, said U-shaped clamping member adapted to be moved in a lateral direction on said rod when its legs are pressed towards each othei to permit the lateral adjustment of said receiver, and to maintain said receiver in its laterally adjusted position on said rod when the pressure on said legs is removed, and means engaging the one end of said rod for preventing the displacement of said clamping member.

5. ln a device of the character described including a pair of head bands provided with two pairs of hooked shaped ends, secured permanently to a cylindrical supporting member by pressing the inner Wall of said cylindrical member into engagement with one of said pair of hooked ends of said head band, a receiver and a member for pivotally supporting the same, a spring clamping member integrally formed with said receiver supporting member for adjustably supporting said receiver on said cylindrical supporting member, and a screw for preventing the disassociation of said clamping member relative to said cylindrical member.

(3. ln a device of the character described ncluding a pair of head bands provided with two pairs oi' hooked ends and a pair of cylindrical members for permanently securing said pair of head bands in relation to gagement with the respective pairs of hooked l ends of said pair of head bands, a pair of receivers and supporting members for the same, clamping members integrally formed with said receiver supporting members for adjustably supporting said receivers on said cylindrical members relative to said head bands, and means ior preventing the disassociation of said clamping members and said cylindrical members.

7. In a device of the character described including a pair of head bands, a pair of cylindrical supporting members, two pairs oi hooked ends formed on said head bands, said pair of head bands being permanently secured to said supporting members by pressing the inner Walls of the cylindrical supporting members into engagementwith the respective pairs of hooked ends of said pair ot head bands and maintained in position and separated from each other by said supporting members, a pair of receivers and supporting members for the same, adjustable means' integrally formed With said receiver supporting members for adjustably securing said receiver supporting members on said cylindrical supporting members.

8. In a device of the character described including a 'pair of head bands, a cylindrical supporting member adapted to receive a pair of ends of said head bands, the end portions of said pair of ends adapted to engage the inner Wall of said cylindrical supporting member to permanently secure the said pair of head bands to said cylindrical member and to maintain the head bands separated and in position relative to each other, a receiver and supporting member adj ustably supported on said cylindrical supporting member.

9. ln a device of the character described including a pair of head bands, a pair of cylindrical mounting members, a pair of ends of said head bands mounted in the end of one of said pair of mounting members and the other pair of ends of said head bands mounted in the end of the other of said mounting members, said head bands maintained permanently secured in said mounting members by engagement with the inner wall of said cylindrical mountingmembers, a pair of receivers and individual, adjustable supporting means for the same, supported on said mounting members.

10.'In a device of the character described including a pair of head bands, a cylindrical member, the end portions orn said head bands being provided With a depression, said cylindrical member adapted to receive a pair of ends of said head bands and having a portion of its wall pressed inwardly to engage said depression in said end portions, and

i Y i ,.freferirme@ aiso a portion of its Wall pressed againstand at right angles to its opposite Wall and `loetween the ends of said head hands to'hoid the same securely in said cylindrical meml1. In a device of the character described, including a pair of head bands, apair of lcylindrical supporting` ii'ienihers, the end a portion of its outer Wail indented so that the inner Wall yopposite the indentation engages said depression in said end portion, and also having a portion of its Wall pressed into engagement with its opposite Walll between said pair of ends to securely maintain said head bands in position in said cylindricai member.

Signed by me atGhieago, in the county of Cook and State of I11inois,`this 7th day of March, 1922.

ERNEST A. BOHLMAN.l 

